Summary - City of Gosnells

Vegetation 58latilobus, Sphaerolobium vimineum, *Symphyotrichum squamatum, Thysanotus arenarius, Typha?domingensis, *Watsonia meriana var. bulbillifera, Xanthorrhoea preissii and *Zantedeschia aethiopicaVegetation Unit T5 inhabited a gentle slope underlain by a well developed peat layer and coarse quartz sand.It was a transitional zone between a deep quartz sand dune and a muddy palusplain (i.e. between about 15 mand 17.5m AHD) in Precinct 2. There was a very high water table in this habitat throughout the year (suchthat the soil surface was waterlogged for most of the year).The condition of the vegetation in this area was generally in good to very good condition with an intactvegetation structure. However, a number of invasive woody weeds have invaded the wetland and requiremanagement before they become more abundant. These weeds are *Acacia longifolia,*Cortaderiaselloana,*Ricinus communis and *Schinus terebinthifolius.Vegetation Unit T6: Melaleuca preissiana low open forest over Lepidosperma longitudinale- Schoenusrigens open sedges and open herbs.Vegetation Unit T6 inhabited the base of the slope below about 15 m AHD on shallow sand over mud inPrecinct 2. This area was waterlogged and remained damp due to seepage from upslope for most of the year.Common associates of this unit included: *Acacia longifolia, Aotus gracillima, Banksia littoralis,Burchardia bairdiae, Baumea juncea, *Cortaderia selloana,*Eragrostis curvula, Dampiera linearis, Dielsiastenostachya, Drosera gigantea subsp. gigantea, *Ricinus communis, *Schinus terebinthifolius, Seneciopinnatifolius var. latilobus, Sphaerolobium vimineum, *Symphyotrichum squamatum, Thysanotus arenariusand *Zantedeschia aethiopica.This vegetation was well developed and in good condition in one block in Precinct 2 despite a few largewoody weeds. Another occurrence in Precinct 2 had a degraded understorey.Vegetation Unit T7: Melaleuca preissiana low open forest over Dielsia stenostachya mid-dense rushes andopen herbs.Common associates of this unit included: Beaufortia squarrosa, Chamaescilla corymbosa var. corymbosa,*Conyza sumatrensis, Drosera heterophylla, Drosera macrantha subsp. macrantha, *Ehrharta calycina,*Gladiolus undulatus, Lomandra micrantha subsp. micrantha, Melaleuca rhaphiophylla, Schoenus rigens,Thysanotus arenarius, Thysanotus manglesianus, Thysanotus thyrsoideus, *Urospermum picroides.This vegetation was an unusual unit that was only recorded from one area in the MKSEA (in Precinct 2). Itinhabited a dampland where the sandy soil was waterlogged during the winter and early spring only,probably due to sub-surface seepage. Unfortunately there was insufficient access allowed to this wetland bythe landowner to characterise this habitat in more detail.The condition of the vegetation in this area was good although weedy grass species were abundant in parts ofthe wetland, probably due to frequent burning.Vegetation Unit T8: Melaleuca rhaphiophylla low woodland to low open forest over degraded understorey.All of the vegetation in the MKSEA that includes a canopy of low Melaleuca rhaphiophylla trees and adegraded understorey is this unit. It occurred in a number of areas in Precincts 3A, 2 and 1. On the SCP,Melaleuca rhaphiophylla is a key indicator of the seasonally high water tables. In the MKSEA thesewetlands were either sumplands, floodplains or paluslopes.Vegetation Unit T9: Casuarina obesa - Eucalyptus rudis low open woodland over Melaleuca lateritia –Melaleuca viminea - Astartea affinis patchy mid-dense scrub with patchy Casuarina obesa -Eucalyptus rudislow trees over open herbs, grasses, and sedges including *Romulea rosea, Amphibromus nervosus andChorizandra enodis.Common associates of this unit included: Isolepis cernua var. setiformis, *Juncus capitatus, Lepyrodiaglauca,*Lolium multiflorum, Meeboldina cana, Meeboldina roycei, *Ranunculus muricatus, Triglochinlinearis and Wurmbea dioica subsp. aff. alba.This vegetation inhabited a small clay sumpland in Precinct 3B.Tauss, C. and Weston, A.S. (2010). The flora, vegetation and wetlands of the Maddington-Kenwick Strategic Employment Area.A survey of the rural lands in the vicinity of the Greater Brixton Street Wetlands. Report to the City of Gosnells, W.A. Version 18.04.10